US2168822A - Closure for collapsible tubes - Google Patents

Description

Aug. 8, 1939 E Q PINK 2 2,168,822

CLOSURE FOR COLLAPSIBLE TUBES Fi1ed Nov. 5, 1938 2 Sheets-Sheet 1 Inventor A tiorneys 1939 E. c FINK 2,168,822

CLOSURE FOR COLLAPSIBLE TUBES Filed Nov. 5, 1938 2 Sheets-Sheet 2 In venior Patented Aug. 8, 1939 UNITED STATES PATENT OFFICE 1 Claim.

' which is adapted for attachment to different tubes at will to become a permanent part of the tube until the latter is empty.

To the accomplishment of the foregoing, and

subordinate objects presently appearing, a preferredembodiment of my invention has been illustrated in the accompanying drawings, set forth in detail in the succeeding description, and

defined in the claim appended hereto.

In said drawings: Figure 1 is a fragmentary view in side elevation of a collapsible tube equipped with a preferred embodiment of my improved closure.

Figure 2 is a \iCW partly in side elevation and partly in transverse section.

Figure 3 is a view in section taken on the line 33 of Figure 1 looking in the direction indicated by the arrows and drawn to an enlarged scale.

Figure 4 is a similar view taken on the line 44 of Figure 1 looking in the direction indicated by the arrows,

Figure 5 is a view in bottom plan of the closure member, and

Figure 6 is a view in edge elevation of said member.

Referring to the drawings by numerals, accord:- ing to my invention, the tube I, which is of the usual collapsible type, is equipped with a reduced neck 2 terminating in an enlarged frusto conical nozzle 3. A closure member for the nozzle 3 is provided in the form of a flap 4 of moulded rubber having adjacent one end thereof an enlarged annular cap part 5, a diametrical cap manipulating tab 6 extending from said cap part, and a tail piece 1 extending from said cap part diametrically opposite the tab 6 and terminating in an enlarged eyelet-like end 8. The end 8 is of the requisite inside diameter to fit snugly around the p neck 2 and the tail piece I is of a length such that in the described position of the end 8 said piece.

and a reduced mouth opening l0 leading from said socket 9 to one side of said part and slightly smaller in diameter than that of the neck 2.

The manner in which the described closure is operated will be understood from the foregoing. 5

Sufiice it to explain that the end 8 is stretched over the nozzle 3 and forced down upon the neck 2 whereby the closure is permanently attached to the tube I, against loss, but may be transferred to another similar tube when desired. When it 10 is desired to close the nozzle 3, the tab 6 is grasped and the cap part 5 forced down over said nozzle 3, the tail piece bending as will .be understood to permit such placement of said cap part. In the applied position of cap part 5 the socket 9 hugs 15 the nozzle 3 and the edges of the mouth H) the neck 2 thereby hermetically sealing said nozzle. When it is desired to open the nozzle 3, the tab 6 may be grasped and thecap part 5 pulled off the nozzle 3 and from under the same whereupon 20 the tail piece I will react to throw said cap part conical nozzle on the outer end of said neck, and

a closure member for said nozzle comprising a strip of resilient material having an eyelet-like end sleeved onto said neck and provided with an aperture therein fitting snugly around said neck whereby said end is prevented from slipping oiT said neck by said nozzle, the other end of said strip being enlarged and socketed to provide a cap for closing said nozzle, said socket being frusto conical in'shape and slightly smaller than said nozzle to tightly hug the latter and having a 45 restricted mouth whereby said cap may be positioned over said nozzle with a snap action, and a finger grip tab extending from said cap for use in positioning the same.

ELMER C. FINK. 5o

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